CVE-2018-19215

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-11-12 · updated 2026-06-17
Weakness: CWE-125

Description

Netwide Assembler (NASM) 2.14rc16 has a heap-based buffer over-read in expand_mmac_params in asm/preproc.c for the special cases of the % and $ and ! characters.

Affected products

NASM Netwide Assember: 12.14-rc16
Red Hat Enterprise Linux: 5.0, 6.0, 7.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00017.html
https://bugzilla.nasm.us/show_bug.cgi?id=3392525
https://repo.or.cz/nasm.git/commit/4b5b737d4991578b1918303dc0fd9c9ab5c7ce4f
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00017.html
https://bugzilla.nasm.us/show_bug.cgi?id=3392525
https://repo.or.cz/nasm.git/commit/4b5b737d4991578b1918303dc0fd9c9ab5c7ce4f

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